What type of neurons carry impulses from the central nervous system to...
According to the text, efferent (motor) neurons carry impulses from the central nervous system to effector organs.
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What type of neurons carry impulses from the central nervous system to...
Understanding Neurons and Their Functions
Neurons are specialized cells in the nervous system that transmit information through electrical and chemical signals. They are categorized based on their function: afferent (sensory), efferent (motor), and interneurons.
Afferent (Sensory) Neurons
- These neurons carry impulses from sensory receptors to the central nervous system (CNS).
- They detect external stimuli like light, sound, and touch.
- Afferent neurons are responsible for conveying sensory information to the brain for processing.
Efferent (Motor) Neurons
- Efferent neurons, also known as motor neurons, transmit impulses from the CNS to effector organs.
- They play a crucial role in initiating responses in muscles and glands.
- Efferent neurons are essential for voluntary movements, such as walking or grasping an object, as well as involuntary functions like heartbeat regulation.
Internuncial (Connector) Neurons
- These neurons, also known as interneurons, connect afferent and efferent neurons within the CNS.
- They process information and facilitate communication between different regions of the nervous system.
- While they are crucial for reflex actions and complex processing, they do not carry impulses directly to effector organs.
Reflex Neurons
- Reflex neurons are not a distinct category but refer to the neural pathways involved in reflex actions.
- They include both sensory and motor neurons, allowing for quick, automatic responses to stimuli.
Conclusion
Given the definitions and functions of these neurons, the correct answer is option B: Efferent (Motor) Neurons. They are responsible for carrying impulses from the central nervous system to effector organs, enabling the body to respond to stimuli effectively.